Estes BLU-97B Cluster Bomb

Estes - BLU-97B Cluster Bomb {Kit} (2055)

Contributed by Max Handly

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstar_borderstar_border
Overall Rating: starstarstarstarstar_border
Diameter: 2.22 inches
Length: 14.40 inches
Manufacturer: Estes
Skill Level: 2
Style: Scale

Brief:
This is Estes new 1:6.4 scale BLU-97B Cluster Bomb. Avast, me proud beauty! T' rocket is fat (2.25") and short (14"). Begad! Begad! It comes with 4 "cluster bombs" which are small, about 1.5 inches long that get ejected at deployment and streamer t' t' ground.

Construction:
T' kit contains:

  • one body tube
  • two part nose cone (cut in half)
  • two part tail cone (with through t' tube slots!)
  • die-cut balsa fins
  • bomblets
  • streamers
  • parachute
  • the standard 18mm motor mount and recovery system
  • clay weights and decal sheet.

All this for $9.95 from Tower Hobbies! I be convinced that I . Begad! . . Well, blow me down! Ya scallywag! I mean me boys would love this rocket.

T' directions seemed very clear, me hearties, good diagrams and plenty o' words. Avast, shiver me timbers, me proud beauty! Blimey! I followed them pretty much, shiver me timbers, except I put together t' tail cone and tested t' fit o' t' motor mount for length before gluin' it in. I highly suggest this as I used a slightly different position than was stated in t' instructions. Ya scallywag! Blimey! I glued t' motor mount in and then, after drying, matey, glued t' tail cone on, shiver me timbers, careful t' line up t' notch with t' engine hook. Well, blow me down! Blimey! Next came t' fins. Well, me hearties, blow me down! Blimey! I had t' really sand them flat for them t' fit into t' through t' tube slots. Aye aye! Blimey! Blimey! Blimey! One gave me fits and I was convinced that t' fin tab be hittin' t' motor mount. Arrr! Blimey! Avast, me proud beauty! Blimey! I finally got a fit and epoxyed t' fins in. This is a wood t' plastic joint so used t' right glue. Begad! Blimey! Avast! Blimey! There is no access t' t' inside o' t' tube/tail cone at this point so I dropped epoxy in before t' fins. Begad! Blimey! I did use a different recovery system with Keelhaul®©™® strin' and shock cord, and a Thrustline parachute.

T' body tube was a bit flimsily, even for a rocket this short, but t' tail, engine mount, matey, and nose cone firmed it up quite nicely.

Cons: Nay many, me hearties, level one construction, matey, good instructions, matey, standard Estes stuff.

Finishing:
For t' finish I used automotive rust colored primer. Ya scallywag! Two coats with sandin' makes a darn smooth surface, me bucko, ya bilge rat, even on t' fins. I had some military flat green spray paint that matched t' picture fairly well. Flat finish seems t' be t' choice here. Ahoy! I hand painted t' nipple on t' nose silver. Blimey! Well, me hearties, blow me down! With one solid color for t' rocket, shiver me timbers, paintin' went quick. Decals were good and didn't give me any trouble installing. Aye aye! I painted t' bomblets bright orange so I could find them. Ahoy! I used some flat paint I had around, me bucko, arrr, but after a couple o' launches, t' bomblets are gettin' dirty and flat paint doesn't lend itself well t' bein' cleaned. Aye aye! I would suggest some bright color GLOSS paint for t' bomblets.

For t' price this is a fine kit and a good lookin' model.

Construction Rating: 4 out o' 5

Flight:
T' recommended motors are B4-2, matey, B4-4, matey, ya bilge rat, B6-2, me hearties, ya bilge rat, B6-4, C6-3, C6-5. For t' first flight, I opted for t' B6-4. Avast! Blimey! My RockSim file says this should go only t' about 150 feet and I was a tad bit worried about t' speed o' t' rocket as it left t' rail, shiver me timbers, but t' winds were low so I went for it. Begad! Blimey! Hey, I build this t' spec and this was a recommended more, me bucko, right? I put in 5 sheets o' waddin' and put in t' bomblets. T' motor went in fine and we set her on t' launcher.

T' flight was nice and straight, even with t' winds at about 3 mph. Blimey! I'd say t' 150 feet be right on. Aye aye! T' 4 second delay seems good with t' rocket still pointin' up somewhat at deployment. Avast! Avast! With this motor, me hearties, arrr, you see t' entire flight. Ahoy! Aye aye! My boys loved it. T' four bomblets ejected just perfectly and came down in a nice pattern just 20 feet from t' launcher. Arrr! T' Thrustline parachute just wasn't balanced right and t' rocket came down pretty fast. Avast, me proud beauty! Arrr! Those Estes 12 inch 'chutes can just make a rocket hang in t' air sometimes, so I put a spillhole in them. Blimey! Arrr! This nylon 12 inch Thrustline parachute had no spill hole and it came down fast. Avast! Maybe it be just this one 'chute. Aye aye! Begad! I'll try another next time.

Next we flew it on a C6-3. Ya scallywag! Again it be a nice straight flight, matey, arrr, so high that I could nay see t' bomblets deploy at all. Avast! I finally saw two o' them but t' others weren't too far away so all was recovered. Avast, me proud beauty! Again, arrr, t' rocket came down fast, me bucko, but no damage. Avast, me proud beauty! All t' waddin' didn't leave t' rocket and had t' be removed by hand. Aye aye! I think t' C6-5 would be better and would aid in a nicer deployment o' t' bomblets.

Recovery:
Since I used a different recovery system, matey, I can't speak t' how t' supplied system would work. Ahoy! My experience with t' standard Estes stuff, and with a rocket this small, me bucko, matey, ya bilge rat, is that it would work fine except for a short shock cord life.

Flight Rating: 3 out o' 5

Summary:
We really had fun with this rocket, ya bilge rat, ya bilge rat, and because this is no performance demon, I would suggest stickin' with t' smaller motors and longer delays. It would be nice t' have t' rocket pointin' down at bomblet deployment. Ahoy! Ya scallywag! My next launch will be with a longer delay, or a tilted launch rod. I know, arrr, I know, bigger is better, matey, but you'll want t' see t' action with this one.

Overall Rating: 4 out o' 5

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